Home / 131,982.84-182,162.79-78,297.66

Finding the Fourth Proportional to 131,982.84, 182,162.79 and 78,297.66

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Solution

The fourth proportional to 131,982.84, 182,162.79 and 78,297.66 is: 108,066.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,982.84 : 182,162.79 = 78,297.66 : x
  2. Step 2: Convert to fraction form
    131,982.84/182,162.79 = 78,297.66/x
  3. Step 3: Cross multiply
    131,982.84x = 182,162.79 × 78,297.66
  4. Step 4: Simplify right side
    131,982.84x = 14,262,920,196.07
  5. Step 5: Solve for x
    x = 14,262,920,196.07/131,982.84
  6. Step 6: Final answer
    x = 108,066.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.